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Ok..yea tried disabling it just to check. Made things slightly more choppy.
My question is really how to optimize the system to consider the limitation

First, how does the 32-bit memory limit affect VM and cache..
Second, Should I be forcing a fixxed VM amount?

For example, if I have 2 GB system Ram and my system can only utilize max 3.25 then should I set VM usage to 1.25 GB (Or maybe about 1.24 to account for the 640k of cpu cache) to optimize it (stay within the limit).

Originally Posted by Shinma

Actual limit would depend on the mobo design.
Some are 3.25 GB, others max out at 3.5 GB.

First, how does the 32-bit memory limit affect VM and cache..
Second, Should I be forcing a fixxed VM amount?

CPU cache is the first memory the system will look for data. It would not be affected by the 32-bit limit.
Virtual memory is used when you run out of physical memory. It's more that you only have 2GB physical ram vs the 32-bit limit.

I usually let the system control the virtual memory. It doesn't make sense to lock up 1.25GB of memory. You can set a minimum and max if you want.